Phonograph.



J. C. NUBRNBERG,

PHONOGRAPH.

APPLIOATION FILED 1330.30. 190s.

Patented Aug. 10, 1909 2 SHBETLSHBET l.

F/dz.

J. G. NUERNBERG.

PHONOGRAPE.

APPLICATION IILIID DBo.ao,19os.

930,683. y Patented Aug. 10, 1909.

2 SHEETS-SHEET 2.

llllllllllll dal @im @MSM/@3M A JOHN C. NUERNBERG, OF ATHENS, WISCONSIN,ASSIGNOR OF ONE-HALF TO CLAUDE HAMILTON, OF ATHENS, WISCONSIN.

PHONOGRAPH.

Specification of Letters Patent.

Application led December 30, 1908.

Patented Aug. 10, 1909.

Serial No. 470,075.

To all whom it may concern:

Be it known that I, JOHN C. NUERNBERG, a citizen of the United States,and resident of Athens, in the county of Marathon and State oflisconsiin have invented certain new and useful Improvements inPhonographs; and I do hereby declare that the following is a full,clear, and exact description thereof.

The objectof my invention is to provide a simple and effective repeatingattachment for disk phonographs, its construction and arrangement beingsuch that when the swinging-arm of a phonograph has completed its travelin the reproduction of a record, the said arm is lifted by the repeatingdevice, returned to the startino upon the record, and then gentlyIowered in such a manner that the pin is set upon the record Withoutcausing any damage to the same.

The invention therefore consists in various structural features andcombination of parts as hereinafter set forth with reference to theaccompanying drawings and subsequently claimed.

In the drawings: Figure l represents a plan view of a fragment of a diskphonograph having attached thereto a repeating device embodying thefeatures of my invention, parts being broken away and parts in sectionto better illustrate the details; Fig. 2, an elevation of the same withparts broken away and other parts in section to more clearly show thestructural details; Fig. 3, a detail sectional view of the apparatus,the section being indicated by line 343 of Fig. l; Fig. 4, a detailcross-section of the apparatus, as indicated by line 4 4 of Fig. l; Fig.5, a detail sectional View as indicated by line 5 5, showing anelevation of the repeater, motor and connected mechanism, and Fig. G, adetail sectional View, as indicated by line 6 6 of the preceding figure.

Referring by characters to the drawings, A indicates a phonograph box, Ba record disk mounted thereon and C a hanger which is secured to thebox, into which hanger is pivotally mounted the usual horizontalswinging hollow arm D. This arm terminates with a cross sleeve E, intowhich is oscillatively fitted a U-shaped tube F, the outer free end ofthe tube being provided with a diaphragm head G carrying the Vibratorypin H. All of the above described pointl mechanism is of any standardconstruction and forms no part of my invention, it being understood thatthe U-shaped tube is capable of independent vertical motion relative tothe horizontal swing of the arm D, whereby compensation is provided whenthe pin II is performing its function.

A bearing sleeve l provided with an extending clip 2 is secured to thearm D at the junction of its sleeve-portion E. Fulcrumed in the bearingsleeve l is a controlling lever having a depending arm 3 that extendsunder the diaphragm head G and an upwardly projecting arm 4, whichlatter arm is connected by a flexible coil-spring 5 to a motorcontrolledcrank G that is intermittently rotated. A stop-lug 3a extends from theleverarm 3 and is adapted to contact with the sleeve portion E of theswing-arm D, the lug being provided to control the limit of movement ofthe'lever in one direction. The crank is loosely mounted upon apower-shaft- 7, which shaft is revoluble in bearings of a frame 8secured to a base-plate 9, the baseplate being in turn fast to the topof the phonograph box. One end of a clock-spring 10 constituting amotor, is secured to the power-shaft 7 the opposite end of theclockspring being fast to a housing 11, forming part of the frame 8, andthrough which housing one end of the power-shaft extends and is providedwith a winding-key, as shown. The opposite end of the power-shaft hassecured thereto a ratchet-wheel 12, which is engaged by aspring-controlled pawl 13 carried by the crank 6, whereby said crank isrotated in one direction, while the pawl and ratchet-wheel connected tothe powershaft constitute a clutch to permit winding of the clock-springwithout disturbing the aforesaid crank. The crank 6 is arranged to berotated by the clock-spring iu the direction as indicated by the arrowsin Figs. 2 and 5, and as shown in these figures, when said crank is inits normal position it is held by a lug 14, which lug engages theunderside of a notched head l5 of a rock-arm 16, the latter' beingfulcrumed upon the frame S. For the purpose of preventing movement ofthe crank G during the winding operation of the clock-spring l0, thecrank-lug 14 is locked against the underside of the notched head l5, bymeans of a wedge-shaped block 17, which block forms part of aleaf-spring that is secured to said rocker-arm. The

tapered face of the block 17 is presented toward the end of the lug 14and is disposed at a right-angle to the fulcrum of the rockerarm. Bythis arrangement it will be seen that as the crank lug is brought to itsseat under the rocker-arm head, the end of the lug will engage theleaf-spring and force the same backward t0 thereby permit said lug 14 toseat, at which time said leaf-spring snaps forward and effects thelocking. f

Pivoted to the frame 8, opposite the rockarm 16, is another rock-arm 18,the two being connected by a link 19, whereby they are actuated inunison and constitute in connection with the crank stops for the motor.The upper end of the rock-arm 18 is also arranged to be engaged by thelug 14 of the crank, whereby the latter is checked when released by therock-arm 16, thus the motive force in connection with said crank ischecked at each half revolution. The lower vend of the rock-arm 16 isengaged by one arm of a bell-crank 19, which bell-crank is pivoted uponthe base-plate 9, the opposite arm of said bell-crank being nestedwithin a notched recess of a slide-bar 20, asV clearly illustrated inFigs. 1 and 3 of the drawings. The slide-bar 20 is guided in ears 21extending from the base-plate and is slotted to receive thumb-screws 22,which screws serve as retainers for a pair of adjustable tappets 23, 24,that are arranged to project upward upon opposite sides of the swingingarm D of the plunger, and together with the slidebar and bell-crankconstitute release-mechanism for the rock-arms or motor stops. As bestshown in Figs. 1 and 4 of the drawings, the base-plate 9 is providedwith a slotted flange 25 approximately alined with the diaphragm head G.This flange carries an adjustable finger 26 which is secured to theflange by means of a thumb-screw 27 that passes through the slot in saidflange and also through an aperture in the base-portion of the finger.The end of the finger projects slightly over the upper face of therecorddisk and beyond said finger end is extended the tail of aspring-rod 28 having its end turned downward. The spring-rod is fastenedto the base-portion of the finger and is normally under a slighttension, due to its engagement with the throat of a guide-lug 28a, whichextends from the finger and serves to hold the spring against horizontalplay. The finger 26 constitutes a stop against which the diaphragm headcontacts when returned to its starting-point, its adjustable featurebeing provided in order that said diaphragm head may be accuratelychecked so to bring the pin H thereof in register with thecircumferential starting-point upon the record-disk. The delicatespring-rod 28 in this case extends under the aforesaid diaphragm head,and as the same drops, by gravity, this spring-rod receives and absorbsall shock in order that the pin H may be gently seated upon therecord-disk and thus prevent the same from being injured.

It should be understood that the weight of the vertically swingingdiaphragm-head and connected parts, relative to the tension of thespring-rod, is such that said tension will not interfere with a perfectcontact between the pin H and record-disk, and when the diaphragm-headleaves the spring-rod there will be no appreciable change in the tone ofthe instrument, this effect being duc to the inclined end of saidspring-rod, which permits a gradual release of said diaphragmhead fromthe former.

In adjusting the repeater device, the tappets 23, 24, are set so thatthe tappet 24 will be actuated by the swing-arm D, upon the return ofthe same to its starting position. The tappet 23 is likewise set withrelation to the swing of the arm, so that when said arm has reached thepoint upon the disk where the record is concluded the aforesaid arm willactuate this last named tappet.

As shown in the drawings, all views illustrate the parts in theirstarting position, in which position the coil-spring 5 is more or lessslack, due to the crank 6 and lever-arm 4 being at their shortestposition apart. Now should the instrument be put in motion areproduction of the record will be instantly started, the swinging-arm Dbeing gradually moved in an arch toward the center of the disk untilsuch time as it strikes tappet 23. A slight movement of the tappet,together with the slide-bar 20, then causes a movement of the bell-crank19a, which in turn actuates the rocker-arms 16 and 18. This movementfrees the lug of crank 6 from its seat under the head of the rocker-arm16 and releases the motive power, which power causes said rocker-arm tomake onehalf of a revolution, when it is stopped by the end ofrocker-arm 18 having been moved into the path of travel of the lug 14simultaneously with the movement of rocker-arm 16, due to thelink-connection between the latter and rock-arm 18. Upon the initialmovement of the released crank its coilspring connected to lever-arm 4,causes the same together with its arm 3 to rock in the sleeved bearing,the coil-spring 5 prior to this time having been drawn taut. Inconsequence of this movement, it will be understood that thediaphragm-head together with pin H is immediately lifted by leverarm 3 aslight distance, which distance is limited by the stop-lug 3a of saidarm coming in contact with the sleeve E of the swingarm. The pin H isnow clear of the disk record and as the crank 6 completes its halfrevolution under the power of the motor, the swing-arm D is quicklymoved over to its startino position. Thus the crank-arm 6 in describingits first half revolution lifts t i l the diaphragm-head and draws theswinging-arm D back to its starting-point. The crank-arm now rests uponthe top of rockerarm 18 and the coil-spring 5 is taut. Owing to the factthat the crank-arm, when making its first revolution, travels fasterthan the swinging-arm D, said crank-arm consequently distends thecoil-spring 5 and hence the latter spring, in contracting, causes theswinging-arm D to be moved over to its starting-point, the interval oftime in which this movement takes place being the period when thecrank-arm is resting upon the rocker-arm 18. At the instant of impactbetween the diaphragm-head and the finger 2G, upon the return movementof the swingarm D, the latter actuates tappet 24, which action throughthe slide-bar and bell-crank causes the rock-arms to assume their normalor starting position, as shown in the drawings. This rock-arm 18 is thusswung free of the lug 14 of the crank-arm, which arm had momentarilyrested thereon and the latter is thereby returned by the motor to itsstarting-point having now made a complete revolution in one direction.The crank-arm after being returned to its normal or starting position isagain caught under the head of rock-arm 16, whereby slack ot" thecoil-spring 5 is established and the diaphragm head will assume such aposition as will enable the pin H to effect a repeat operation of therecord, by engaging the first circumferential groove in the disk.

Thus it will be seen that the essential features of the repeatermechanism ,consist primarily in a motor having a flexible connectionwith the swinging-arm of a phonograph and intermittent stop and startmechanism for the motor under control of said swinging arm.

Vhile I have shown and described the motor-spring as being connecteddirectly to the power-shaft, it is apparent that there may, in someinstances, be interposed any suitable clock-gear trains between thespring and power-shaft, whereby frequent winding of said spring will beavoided.

I claim: Y

1. In a disk phonograph provided with a swinging-arm, a repeatingmechanism comprising a motor, a crank in connection with the motor, apair of' stops for the crank, release tappets disposed upon oppositesides of the swinging-arm in connect-ion with the stops, and a flexibleconnection between the crank and swinging-arm.

2. In a disk phonograph provided with a swinging-arm, arepeating-mechanism comprising an independent motor, a flexibleconnection between the swinging-arm and motor, and a start-and-stopmechanism for the motor controlled by said swinging-arm.

3. In a disk phonograph provided with a horizontally swinging-arm, andhaving` a vertically swinging head section in connection with the arm, arepeating-mechanism comprising a controlling-lever for the head sectioncarried by the arm, a stop for said arm adapted to engage said headsection, a motor, a flexible connection between the motor andcontrolling-lever, stop-and-start mechanism for said motor, and tappetmechanism disposed in the path of travel of the swinging-arm inconnection with the stopand-start mechanism.

4. In a disk phonograph provided with a horizontally swinging-arm, andhaving a vertically swinging head section in connection with the arm, arepeating-mechanism comprising a controlling-lever for the headsectioncarried by the arm, a yielding stop for said arm adapted to engage saidheadsection, a motor actuating crank, a flexible connection between thecrank and controlling-lever, stops disposed in the path of travel of thecrank, tappets upon opposite sides of the swinging-arm, and releasingmeans for the stops in connection with the tappets.

5. In a disk phonograph provided with a horizontally swinging-arm, andhaving a vertically swinging head-section in connection with the arm, arepeating-mechanism comprising a controlling lever in pivotal connectionwith said arm, one arm of which lever extends under the head-section, astop for the controlling-lever, an adjustable yielding stop for the headsection of the aforesaid arm, a motor actuating crank, a flexibleconnection between the crank and controlling lever, stops disposed inthe path of travel of the crank, tappets upon opposite sides of theswinging-arm, and adjustable releasing means for the stops in connectionwith the tappets.

In testimony that I claim the foregoing I have hereunto set my hand atAthens, in the county of Marathon and State of IVisconsin in thepresence of two witnesses.

JOI-IN C. NUERNBERG.

Viitnesses:

FRANK F. CHEsAk, C. F. HAMILTON.

